6. The windpipe.
7, 8. Where the saliva is made.
9. The stomach.
10. The liver.
11. Where the bile is made.
12. The duct through which the bile passes to the small intestine.
13. The upper part of the small intestine.
14. Where the pancreatic juice is made.
15. The small intestine.
16. The opening of the small into the large intestine.
17-20. The large intestine.
21. The spleen.
22. The spinal column.
* * * * *
PART X.
FORMULA FOR THE DIGESTIVE ORGANS AND DIGESTION.
1. When my food is chewed, it is rolled by my tongue into the oesophagus,
or food-pipe, which is back of my windpipe, and leads from my mouth down
along the side of my spine, to the left and upper end of my stomach.
2. My stomach is an oblong, soft, and fleshy bag, extending from my left to
my right side, below my lungs and heart.
3. It is composed of three coats or membranes, and resembles tripe.
4. The _outer coat_ is smooth, thick, and tough. It supports and
strengthens the stomach.
5. The _middle coat_ is fibrous. Its fibres have the power of contracting,
sometimes pressing upon the food, and sometimes pushing it along toward the
opening which leads out of the stomach.
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